Composite speed-changer.



PATENTED JUNE 12, 1906. Q

A. WOOD.

' COMPOSITE SPEED CHANGER.

APPLIUATIOK FILED JAN. 31, 1906.

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No. 223,247. PATENTED JUNB12, 1906.

A. 001). I COMPOSITE SPEED CHANGER.

APPLICATION FILED JAILBI, 1906.

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Attorney 110,823,247. I PATENTED JUNE 12, 1906. A. WOOD.

COMPOSITE SPEED CHANGER. APPLICATION FILED JAILSI, 190s."

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witndisgasz lmgltor' mfu). H WW5. Attorney srAcnas PATENT OFFICE.

AUGUSTUS, WOOD, or HAMILTON, oHro, ASSIGNOR TO NILES-BEMENT- POND COMPANY, OEJERSEY CITY, NEW JERSEY.

' No. s2a,247.

COMPOSITE sleaze-CHANGER.

Patented June 12, 1906.

Applicatidh filed January 31, 1906; se'rialmzsa'les.

- SpeedChangers, of which the following is a specification.

In the manufacture of an extended line of machinery numerous cases arise in which a speed-changing device is desired which will be of some eneral a plicability throughout the class of 'versifie machines. v My invention comprehends such a speedchanging device.

' Again, within such general class of diversified machines cases arise in which some -particular subclass of the machines involves a variety of sizes or other var g conditions such that the speed-changer ab di e referred to would not be universally applicable tothe subclass. I

To provide for such cases, m invention contemplates the employment 0 the regular speed-changer above referred to and the ad- 'tion of a secondary speed-changerv of spe+ cifically suitable character to serve as a modifier of the speeds derived from the main speed-changer, the primary and the secondary s eed-chan ers working together and provi g for a 'versity of constructive conditions, while the primary speed-changer is adapted for a general variety of conditions. 1

- Myinvention will be readily understood from the following description, taken in con-' nection with the which Figure Us a side elevation of a composite spee -changer embodying myinvention;Fi 2, a vertical section of the primary speedchanger in the plane of line a of Figs. 1, 4, and 5; Fig. 3, an end elevation of the secondaryspeed-change'r, the primary speedchanger being omitted; Fig. 4, a plan of the composite speed-changer; Fig. 5, a plan of the primary speed-changer with the cover of its casing removed, and Fig. 6- a diagrammatic plan of the main motion parts involved in the composite system.

In the drawings, 1 indicates a bed-plate which is to be of a form adapting it for attachment to the machine in connection with which the composite speed-changer is to be accompanying drawings, in

employed, the bed-plate in the present instance being illustrated as a flat plate with end flanges; 2, a portion of a bevel-gear typifying themachine part to which selective speeds are to be transmitted; 3, the final shaft of the secondary speed-changer, the same being journaled in bearings supported by the-bed-plate; 4, a bevel-pinion on this final shaft gearing with the wheel 2 and typifying the final delivery of rotary motion from the secondary-speed-changer to the machine to be driven; 5, the primary speed-changer considered as a whole ;'6, the prime motionpulley of the primary speed-changer, this pulley representing the constant speed initial element of the composite system; 7 the secondary speed-changer considered as a whole; 8, the final shaft of the primary speedchanger, being the shaft by which the primary speed-changer delivers to the secondary speed-changer the selective speed as controlled by the primary speed-changer; 9, a pinion fast on the shaft 8; 10, a shaft parallel with shaft 3 and constituting the countershaft of the secondary speed-changer; 11, a gear fast on this counter-shaft and driven by pinion 9; 12, a clutch-faced pinion loose on shaft 3 and driven by gear 1 1 of the counter-shaft; 13, a pinion fast on the countershaft; 14, a clutch-faced gear loose on shaft 3 and driven by pinion 13; 15, a clutch splined on'shaft 3 and adapted to clutch gears 12 and 14 alternatively to shaft '3; 16, a rock-shaft mounted in the bed-plate at right angles to the axis of shaft 3; 17, an-arm fast on shaft 16 and engaging secondary clutch 15; 18, a hand-lever fast on shaft 16, and 19 a detent carried by hand-lever 18 and adapted to lock that lever in either of three selective positions correspondingwith the neutral position or the selective'clutching positions of clutch 15.

Give consideration for the present to Fig. 6 and assume for the instant that pinion 9 turns.at constant rate-in other words, that however, pinion 9 turnsat selective rate as controlled by the primary speed-changer, then the range of variable speeds resulting 7 special y proportioned to suit the given speclal situation, and so, also, is the form of the bed-plate which is to connect the general device to the machine to be driven. In other words, having a given machine for which the rimary speed-changer is not ade uate and or whlch a given secondary spee -changer will not make the system ade uate, the gearing of the secondary speed-c anger is to be reproportioned-to suit the case and bring about a proper ultimate range of proper speeds for the final shaft 3 and the machine driven thereby. This special proportioning of the gears of the secondary speed-changer may possibl involve a special sizing of all of the gears etween shafts 8 and 3, while in other and many cases a change in the size of 1 pinion 9 may bring about the desired result.

Proceeding with the drawings, 20 indicates sthe casing of the primary speed-changer, and 21 a bearing secured to this casing and serving for the final shaft 3 of the secondary speedchanger.

The primary speed-changer 5 may for the present be viewed as an unvarying structure, the variations in general structure being embodied in the secondary speed-changer. The primary speed-changer is securedto the bedplate which sup orts the secondary speedchanger, and thebearing 21 of the secondary speed-changer finds its direct support on the casing of the primary speed-changer, the form or dimensions of this bearing varying more or less to suit the conditions bringing about selective proportionings for the secondary speed-changer. This bearing may be viewed as the variable fixed element of unlon between the primary and secondary systems.

Proceeding with the drawings, 22 indicates the initial shaft of the primary speed-changer journaled in the casing 20 and havin fast on 1t the prime pulley 6; 23, a pinion sp ined on this shaft; 24, a tumbling-lever straddling this pinion and fitted to slide and rock on its shaft; 25, a tumbling-pinion carried by the tumbling-lever and gearing with pinion 23 26, a detent carried by the tumbling-lever, which is a hand-lever and adapted to lock the tumblin -lever in various positions; 27, a shaft journafied in the casing of the primary speed-changer parallel with initial shaft 22 and hereinafter termed the cone-shaft; 28, a ear fast on the cone-shaft; 29, a second gear ast on the cone-shaft; 30, a clutch-faced pinion loose "on shaft 8 and engaging ear 28;

31, a clutch-faced gear loose on sha t 8 and engaging gear 29; 32, a double-faced clutch splined on shaft 8 and adapted to clutch gears 30 and 31 alternatively to that shaft; 33,'an arm pivoted 1n the casing 20 and engaging the primary clutch 32; 34, a vertical rockseam shaft pivoted in casing 20; 35, a link connect- 4 mg an arm on shaft 34 with the clutch-arm 33; 36, the rimary clutch-lever, which is a hand-lever, ast on shaft 34; 37, a detent carried by this clutch-lever and adapted to lock primary clutch 32 in either clutchin position or in neutral position; 38, the arm ferred to as being on shaft 34 for connection with link 35, and 39, 40, and 41 a series of dissimilar-sized gears fast on cone-shaft 27.

By shifting tumbler 24 the pinion 25 can be brought into engagement with either of gears 28, 39, 40, or 41, whereby either of four speeds may be imparted to cone-shaft 27 The s eed of the cone-shaft, whatever it may be ad usted for, may be im arted to shaft 8 under either of the two m 'ng conditions controlled by the clutch 32. It thus follows that with initial shaft 22 turnin at a constant rate any selected one of eig t different speeds may be imparted to shaft 8. The proportioning of the gearin of the primary s eed-changer maybe suc as to bring about t e most desirable range and proportioning of slpeeds for the shaft 8 to suit the most gen era efore rethat the number of gears on the cone-shaft may be increased, as desired. Having thus a certain number of well-proportioned selective s eeds for the final shaft 8 of the prima s cc -changer and having two changes ava' a Is in the secondary speed-changer, sixteen different s eeds are at command, the entire system well lending itself to a well-organized composite range of speeds suiting varying special conditions, while retaining the advantaigle of a primary speed-changer adapted not 0 y to the special conditions, but to general conditions.

I claim 1. In a composite speed-changer, the com bination, substantially as set forth, of a shaft, a pair of dissimilar-sized clutching-gears loose thereon, a clutch on said shaft adapted to lock either of said gears to the shaft, a second shaft parallel with the first-mentioned shaft, a pairof dissimilar-sized gears fast thereon and engaging said clutching-gears, a third shaft, a gear ast thereon engaging one of the gears on the second shaft, a pair of dissimilar-sized clutching-gears loose on the third shaft, a clutch on the third shaft adapted to look thereto either of the gears thereon, a fourth shaft parallel with the third shaft, a pair of dissimilar gears fast thereon and engaging the clutching-gears on the third shaft, additional dissimilar-sized gears fast on the fourth shaft, a fifth shaft arallel with the fourth shaft, a gear splined thereon, a tumbling-lever mounted on the fifth shaft and carrying the ear thereon, and'a gear carried bythe tum ling-lever and engaging the gear splined on the fifth shaft and a apted to selectively engage gears on the fourth shaft.

2. In a comppsite speed-changer, the comloination, substantially as set forth of a secon said shaft and engaging the first-men- [oondary speed-changer adapted to impart setioned gear, an initial shaft, and means for lective speeds to a machine, a plate forming a imparting rotation to the last-mentioned part of said secondary speed-changer and shaft.

adapted for attachment to the machine, a gear forming a part of said secondary speedchanger, a casing separably secured to said plate, a primary speed-changin mechanism in said casing, comprising a sha t, a gear fast AUGUSTUS WOOD.

Witnesses:

SAM D. FITTON, M. S.-BELDEN. 

